Centrifugal drying apparatus.



A. NEEF. CENTRIFUGAL DRYING APPARATUS.

APPLIOATION FILED APR. 30,1908.

Patented Oct. 18,1908.

3 SHEETSSHEET 1.

W/TnesJ-es A. N HEP.

OENTRIFUGAL DRYING APPARATUS.

APPLIOATION FILED APR. 30,1908.

Patented Oct. 13, 1908.

3 SHEETS-SHEET 2.

firney A. N EEP. GENTBIFUGAL DRYING APPARATUS.

APPLIGATION FILED APR. 30,1908.

Patented Oct. 13, 1908.

3 SHEETS-SHEET 3.

mtmmw- UNITED-STATES PATENT OFFICE.

ARNO NEEF, or KATTOWITZ, GERMANY.

GElNTRIFUG-AL DRYING APPARATUS.

' Specification of Letters Patent.

Patented Oct. 13, 19cc.

Application filed April 80, 1908. Serial No. 430,188.

To all whom it may concern:

Be it known that I, ARNo Nnnr, a subject "of the German Emperor, residing at Kattowitz, Upper Silesia,.in Germany, have invented certain new and useful Improvements in (entrifugal'Drying Apparatus, of which the following is a specification.

Perforated, conical centrifugal drums, with horizontal axes andinternal means for moving the work through them, have heretofore been used fordrying loose substances.

The present invention is differentiated from the known apparatus of this type by the fact that the known scrapers used for moving the work are connected to actuating mechanism at'the side of the shaft, by which radial and axial movements are simultaneously imparted to them, so' that the work is alternately-pressed against the drum and released, in order to be loosened and turned.

A construction embodying the invention is shown in the annexed drawing, in which F Fi 2 a section on the line AA of Fig. 1 an Fig. I i I a is the conical, perforated drum fixed to the hollow shaft 0 integral with thespider b. The shaft 0 can be rotated by the belt pulley In at high speed about the slowly revolving solid shafte, andis held-from endwise displacement between collars d d. The shaft e has fixed to it a step pulley f. Worms 5/. on the shaft 6 engage. worm-wheels h which have hearings in radial lugsipro jecting from the hollow shaft 0. Crank pins Z fixed to the worm-wheels h engage the actu ating rods m of the thrust mechanism, so that the latter rotates at high speed with tile hollow shaft and is also actuated by the Q rotation of the worm-wheel's; The thrust mechanlsm comprises a series 'of blades or combs n, curved to correspond with I the curvature of the drum, the stems n of these blades fixedto bars 0 fixed to the lgure 1 is a plan view of the apparatus,

Fig. 3 asection on theline B.B ofv rods m. Actuation of the worm-wheels by the worms 9 causes the blades to move radially and also longitudinally of the drum; during half of the circular movement of wheels h, the blades advance and are with of the drum, the moisture being thrown out through the perforations of the drum. The

dry or partly dried material falls on to an,

endless conveyor t traveling over rollers s and passes out of the casing a.

What I claim as my invention and desire to secure by Letters Patent of the United States is 1..-In centrifugal drying apparatus, the combination with a centrifugal perforated drum of scrapers and means for moving said scrapers radially to and also longitudinally parallel to the surface of the drum.

2. In centrifugal drying apparatus, the combination with a centrifugal perforated drum and hollow shaft connected to revolve therewith, of arms on said shaft, wormwhels carried by said arms, crank pins on said'worm-wheels, frames comprlsmg a plu-.

rality of scrapers carried by said pins, a

central shaft and worms on said central shaft engaging said worm-wheels.

In witness whereof I have signed this specificationin the presence of two witnesses.

l ARNO NEEF. Witnesses:

WALTER MENZ', ERNnsrKA'rz. 

